I have the Steeda rear sway bar and the Steeda lowering springs. The difference in the handling is amazing. Extremely tight and very precise. The tires could be a factor. The stock Conti's were good up until about 25K,then they started to get noisy and developed a slight vibration. I have Hankook Ventus V4's on the car now. We will see how they well they work in the long run. Something is not right if the car feels like it is going to come around on you when driving. I would get a second opinion from another dealer.
2012 Focus SE w/Sport Package
Steeda CAI, Steeda Drop Springs, Steeda RSB, Magnaflow Exhaust, 17" Drag DR34 wheels with Hankook Ventus V4 Tires